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- Porsche 928 4.5L 1978-82
The OE Match Brake Pad Wear Sensor is a high-quality replacement braking system component designed to continuously monitor brake pad condition and provide a warning when the friction material reaches its minimum safe thickness. Manufactured to OE specifications for fit, function and reliability, this sensor helps ensure timely brake maintenance and supports safe vehicle operation.
Fits:
- Porsche 928 4.5L 1978-82
Installed directly into the brake pad assembly, the wear sensor forms part of the vehicle's brake monitoring system. When the brake pads wear down to a predetermined level, the sensor triggers the dashboard brake wear warning light, notifying the driver that brake pad replacement is required.
What This Product Does:
- Monitors brake pad wear throughout the service life of the pads.
- Activates the brake pad wear warning indicator when replacement is required.
- Helps prevent excessive brake pad wear.
- Protects brake discs from damage caused by worn friction material.
- Supports safe and effective braking performance.
- Assists with preventative brake maintenance.
- Provides early warning of brake service requirements.
Symptoms Of Wear Or Failure:
- Brake wear warning light remaining illuminated.
- Intermittent brake pad warning messages.
- False brake wear warnings despite healthy brake pads.
- No warning light when brake pads are excessively worn.
- Damaged, broken or corroded sensor wiring.
- Physical damage to the sensor body.
- Fault codes relating to the brake wear monitoring system.
- Warning light remaining active after brake pad replacement.
Why Replacement Matters:
- Brake pad wear sensors operate in demanding conditions and are constantly exposed to heat, brake dust, moisture, road debris and vibration. In many applications, the sensor is designed to wear alongside the brake pads and should be replaced during brake servicing to ensure continued monitoring accuracy.
- A damaged or worn sensor can provide inaccurate brake wear information, potentially resulting in unnecessary warning lights or failure to alert the driver when brake pads have reached their service limit. If brake pads are allowed to wear excessively, braking performance can be reduced and costly damage to the brake discs may occur.
- Replacing a worn brake pad wear sensor restores accurate brake wear monitoring, ensures proper operation of the warning system and helps maintain safe braking performance. An OE Match replacement provides factory-style fitment, dependable operation and long-term reliability, making it an essential component during brake maintenance and pad replacement.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
92861231100
The product you are viewing cross references to these numbers
- Porsche 997 MK1 Carrera 2S 3.8L 2005-08
- Porsche 997 MK1 Carrera 4S 3.8L 2005-08
- Porsche 997 MKII Carrera C2S 3.8L 2009-12
Rear Brake Pad Wear Sensor - Sold each
Maintain the safety, reliability and performance of your
Porsche braking system with this OE Match Rear Brake Pad Wear Sensor. Designed specifically for Porsche 997 Carrera 2S and Carrera 4S
models, this sensor forms a vital part of the factory brake wear monitoring
system, helping drivers monitor rear brake pad condition and schedule
maintenance before braking performance is affected.
Fits:
Installed directly into the rear brake pad assembly, the wear sensor monitors the remaining thickness of the brake pad friction material. When the pads approach their minimum service limit, the sensor activates the dashboard brake wear warning light, alerting the driver that replacement is required.
For high-performance sports cars such as the Porsche 997 Carrera S models, maintaining the brake wear monitoring system is essential for preserving braking efficiency, protecting expensive brake components and ensuring maximum driving confidence.
What Does a Brake Pad Wear Sensor Do?
The brake pad wear sensor continuously monitors brake pad thickness throughout its service life.
As the brake friction material wears down, the sensor eventually contacts the brake disc and completes an electrical circuit, triggering the brake wear warning light on the instrument cluster.
A correctly functioning sensor helps:
- Monitor brake pad condition
- Provide early brake wear warnings
- Prevent excessive brake pad wear
- Protect brake discs from damage
- Improve maintenance scheduling
- Support safe braking performance
- Maintain factory brake monitoring functionality
The sensor acts as an important preventative maintenance component, helping avoid costly brake repairs.
Why Do Brake Pad Wear Sensors Fail?
Brake wear sensors are exposed to extreme operating conditions including heat, vibration, moisture and road contamination.
Common causes of failure include:
- Normal brake pad wear
- Sensor activation when brake pads reach their wear limit
- Damaged wiring
- Corrosion in electrical connectors
- Heat-related deterioration
- Water ingress
- Physical damage during brake servicing
- Age-related material fatigue
As brake wear sensors are considered service items, they should be replaced whenever they become activated or damaged.
When Should a Brake Pad Wear Sensor Be Replaced?
Replacement is recommended whenever brake pads are changed or if the sensor has become damaged.
Common symptoms include:
- Brake wear warning light illuminated
- Intermittent brake warning messages
- Damaged or broken sensor wiring
- False brake wear warnings
- Corroded electrical connections
- Sensor damage during brake servicing
- Rear brake pad replacement due to wear
Replacing the sensor during brake pad replacement ensures the monitoring system continues to function correctly.
Why Replacement Matters
A functioning brake wear sensor helps maintain braking safety and protects expensive brake system components.
Benefits include:
- Accurate brake pad monitoring
- Reliable dashboard warning operation
- Improved braking safety
- Protection of brake discs
- Reduced maintenance costs
- Better servicing planning
- Improved brake system reliability
- Long-term braking component protection
For Porsche 997 owners, maintaining the brake wear monitoring system helps preserve both performance and peace of mind.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99761267602
The product you are viewing cross references to these numbers
- Porsche 996 GT3 MKII 2003>>
- Porsche 997 MK1 Carrera 4 3.6L 2005-08
- Porsche 997 MK1 TURBO 2007-09
- Porsche 997 MK1 GT2 2007-09
- Porsche 997 MKII Carrera C2 3.6L 2009-12
- Porsche 997 MKII Carrera C4 3.6L 2009-12
- Porsche 997 MKII Turbo 2010-13
- Porsche Carrera GT 2003-06
The brake pad wear sensor harness serves as the electrical link between each brake pad wear sensor and the vehicle’s signal/monitoring circuitry (ABS/ECU). As the pads wear down to a threshold level, the sensor completes a circuit that triggers a warning light on the dash, alerting the driver that pad replacement is due.
Sold each.
Fits:
Porsche 996 GT3 MKII 2004 - 2005 Front & Rear
Porsche 997.1 C4 2005 - 2008 Front Caliper
Porsche 997.2 C4 2009 - 2012 Front Caliper
Porsche 997 Turbo / GT2 2007 - 2013 Front Caliper
Porsche GT 2004 - 2006 Rear Caliper
Function: This harness routes and secures the sensor wiring safely along the suspension and chassis to avoid interference, chafing, or damage. The OE Match harness preserves correct electrical paths and protects the sensor signal from interruption - essential for accurate brake pad condition monitoring.
Brake pad wear sensor systems rely on both the sensor element and the wiring harness to deliver accurate warnings. A damaged or broken harness can interrupt the signal even with new sensors fitted, leading to false “OK” readings or no warning when pads are worn. Replacing the wiring harness with an OE Match unit ensures reliable signal transmission and correct integration with the vehicle’s monitoring systems, helping prevent brake damage or unexpected failures.
When to replace.
Replace this harness if you notice any of the following:
• Brake wear warning lamp stays off despite worn pads
• Intermittent or false pad wear warnings
• Visible frayed wiring, broken connectors, or chafing
• Previous repairs with generic wiring failed
• During brake pad or ABS sensor system servicing
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99761267701
The product you are viewing cross references to these numbers
- Porsche 997 MK1 TURBO 2007-09
- Porsche 997 MK1 GT3 / GT3 RS 2007-09
- Porsche 997 MK1 GT2 2007-09
- Porsche 997 MKII Carrera C2 3.6L 2009-12
- Porsche 997 MKII Carrera C4 3.6L 2009-12
- Porsche 997 MKII Carrera C4S 3.8L 2009-12
- Porsche 997 MKII Turbo 2010-13
- Porsche 997 MKII GT2 RS 2011-13
High-quality OE Match replacement rear brake pad wear sensor, engineered to match original Porsche specifications for monitoring rear brake pad wear. Designed for Porsche 997 models, this sensor works with the vehicle’s onboard diagnostic system to provide timely alerts when the rear brake pads approach the service limit.
Sold individually, typically 2 sensors per axle for complete rear pad sets
Fits:
Porsche 997.2 C2 2009 - 2012 Rear Caliper
Porsche 997.2 C4 / C4S 2009 - 2012 Rear Caliper
Porsche 997 TT / GT2 2007 - 2013 Rear Caliper
Porsche 997 GT3 2007 - 2013 Rear Caliper
The rear brake pad wear sensor detects when the brake pad material has worn to its minimum safe thickness and signals the vehicle’s warning system. This alert enables brake servicing before the pads cause damage to other braking components.
Function:
• Monitors rear brake pad wear
• Interfaces with the vehicle’s onboard warning system
• Helps prevent brake rotor damage from worn pads
Brake pads naturally wear down with use. A functioning brake pad wear sensor ensures you receive timely alerts before the pads reach critically low levels. Without a reliable sensor, pad wear may go unnoticed, leading to reduced braking performance, rotor damage, and safety concerns - especially on performance-oriented vehicles like the 997.
When to replace:
• Brake wear warning light appears
• Sensor wiring or connector is damaged or corroded
• After rear brake pad replacement
• During routine brake system servicing
• When upgrading brake components
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99761275402
The product you are viewing cross references to these numbers